Selects

從數(shù)據(jù)表中取得所有的數(shù)據(jù)列

$users = DB::table('users')->get();

foreach ($users as $user)
{
    var_dump($user->name);
}

從數(shù)據(jù)表中分塊查找數(shù)據(jù)列

DB::table('users')->chunk(100, function($users)
{
    foreach ($users as $user)
    {
        //
    }
});

通過在 閉包 中返回 false 來停止處理接下來的數(shù)據(jù)列：

DB::table('users')->chunk(100, function($users)
{
    //

    return false;
});

從數(shù)據(jù)表中取得單一數(shù)據(jù)列

$user = DB::table('users')->where('name', 'John')->first();
var_dump($user->name);

從數(shù)據(jù)表中取得單一數(shù)據(jù)列的單一字段

$name = DB::table('users')->where('name', 'John')->pluck('name');

取得單一字段值的列表

$roles = DB::table('roles')->lists('title');

這個(gè)方法將會(huì)返回?cái)?shù)據(jù)表 role 的 title 字段值的數(shù)組。你也可以通過下面的方法，為返回的數(shù)組指定自定義鍵值。

$roles = DB::table('roles')->lists('title', 'name');

指定查詢子句 (Select Clause)

$users = DB::table('users')->select('name', 'email')->get();
$users = DB::table('users')->distinct()->get();
$users = DB::table('users')->select('name as user_name')->get();

增加查詢子句到現(xiàn)有的查詢中

$query = DB::table('users')->select('name');
$users = $query->addSelect('age')->get();

使用 where 及運(yùn)算符

$users = DB::table('users')->where('votes', '>', 100)->get();

「or」語法

$users = DB::table('users')
                    ->where('votes', '>', 100)
                    ->orWhere('name', 'John')
                    ->get();

使用 Where Between

$users = DB::table('users')
                    ->whereBetween('votes', [1, 100])->get();

使用 Where Not Between

$users = DB::table('users')
                    ->whereNotBetween('votes', [1, 100])->get();

使用 Where In 與數(shù)組

$users = DB::table('users')
                    ->whereIn('id', [1, 2, 3])->get();
$users = DB::table('users')
                    ->whereNotIn('id', [1, 2, 3])->get();

使用 Where Null 找有未配置的值的數(shù)據(jù)

$users = DB::table('users')
                    ->whereNull('updated_at')->get();

Dynamic Where Clauses

You may even use "dynamic" where statements to fluently build where statements using magic methods:

$admin = DB::table('users')->whereId(1)->first();

$john = DB::table('users')
                    ->whereIdAndEmail(2, 'john@doe.com')
                    ->first();

$jane = DB::table('users')
                    ->whereNameOrAge('Jane', 22)
                    ->first();

排序(Order By)、分群(Group By) 及 Having

$users = DB::table('users')
                    ->orderBy('name', 'desc')
                    ->groupBy('count')
                    ->having('count', '>', 100)
                    ->get();

偏移(Offset) 及 限制(Limit)

$users = DB::table('users')->skip(10)->take(5)->get();